JoJo: Diamond is Unbreakable - RPG

The main antagonist of Part 4 and a serial killer hiding among the residents of Morioh. Outwardly calm, polite, and inconspicuous, he wants to live a quiet life, hiding his true nature.

Stand: Killer Queen – Turns objects into bombs. Additional abilities: Sheer Heart Attack and Bites the Dust.

Kira carefully hides his identity and eliminates those who might reveal his secret.

A schoolboy, the son of Kosaku and Shinobu. Very observant, cautious, and brave.

He notices that something is wrong with his father after Kira takes over his identity and begins to investigate what is going on.

No stand. Uses observation and cunning.

An Italian chef and restaurant owner in Morioh. Relaxed, professional, and completely dedicated to cooking.

Stand: Pearl Jam - Alters the properties of food, causing strong changes in the body, usually beneficial to health.

Not a villain or Josuke's enemy.

A self-assured rock musician and Stand user. Arrogant, selfish, and aggressive. He used the Arrow for his own ends.

Stand: Red Hot Chili Pepper - controls electricity and can move through electrical networks.

Prefers to attack unexpectedly and use the city's power grid to its advantage.

A dangerous criminal and one of Josuke's first enemies in Morioh. Cruel, cunning, and utterly ruthless.

Stand: Aqua Necklace - A liquid-like Stand that can penetrate a person's body and attack from within the water.

After receiving a Stand, he becomes a serious threat to the residents of Morioh.

Josuke's father, Jotaro's grandfather. Already elderly, but still cunning, emotional, and eccentric.

Stand: Hermit Purple - Purple vines that can be used to grab, move, and gain information.

He jokes a lot and sometimes gets into awkward situations. Despite Josuke's absence from his life, he sincerely tries to build a relationship with his son.

Josuke's father, Jotaro's grandfather. Already elderly, but still cunning, emotional, and eccentric.

Stand: Hermit Purple - Purple vines that can be used to grab, move, and gain information.

He jokes a lot and sometimes gets into awkward situations. Despite Josuke's absence from his life, he sincerely tries to build a relationship with his son.

A student at Morioh High School. Smart, emotional, proud, and deeply in love with Koichi. At the beginning of the story, her feelings can be obsessive and frightening.

Stand: Love Deluxe – Manipulate your own hair. Hair can grow long, strong, and flexible.

He takes relationships very seriously and doesn’t like rivals.

A professional manga artist from Morioh. Arrogant, stubborn, curious, and obsessed with finding interesting stories. He can be rude and easily gets into conflicts.

Stand: Heaven's Door - Turns a person into a "book", allowing Rohan to read information about them and write down commands.

He clashes especially often with Josuke. He dislikes boredom and is constantly looking for something unusual.

An adult Stand user who came to Morioh to investigate the appearance of new Stand users and meet Josuke.

Reserved, serious, observant, and taciturn. Often appears cold, but is protective of his allies.

Stand: Star Platinum – incredible strength, speed, precision, and reflexes. In Part 4, it can briefly stop time.

Works alongside Josuke and the others when a threat arises.

Keicho's younger brother. Emotional, straightforward, impulsive, and not particularly intelligent, but incredibly loyal to his friends.

Stand: The Hand — Okuyasu's right hand obliterates space. This allows him to close the distance between himself and an object or completely destroy a portion of space.

Josuke's best friend. Often acts before he has time to think.

Josuke's classmate. Polite, kind, observant, and initially rather timid. Gradually becomes bolder and more confident.

Stand: Echoes. Act 1 creates sounds, Act 2 translates recorded sounds into effects, Act 3 can affect the target's weight and movement.

A close friend of Josuke and Okuyasu, Yukako has strong feelings for him.

A high school student from Morioh, the son of Tomoko Higashikata and Joseph Joestar. Kind, outgoing, confident, sometimes lazy, and very short-tempered. He reacts especially harshly to insults about his hairstyle.

Stand: Crazy Diamond - immense strength and speed, capable of restoring damaged objects and bodies, but cannot resurrect the dead.

He is close to Koichi and Okuyasu. He is protective of his friends and those he cares about.